How the heck?

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Chrisbo - 09 Aug 2004 20:31 GMT

We have a Nt 4 DNS server. What troubles me is that
sometimes we find host records from our internal network
in DNS. Not the top folder, in the cache, but in the
lowest folder that has our domain name. How does this get
here and why? I know the tow of us who has access to the
DNS server did not put that in because their was and
obvious IP conflict with two of the added entries. No one
has hacked in either. Please help illuminate.

Thanks,

Chrisbo

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Kevin D. Goodknecht Sr. [MVP] - 10 Aug 2004 01:39 GMT

> We have a Nt 4 DNS server. What troubles me is that
> sometimes we find host records from our internal network
[quoted text clipped - 4 lines]
> obvious IP conflict with two of the added entries. No one
> has hacked in either. Please help illuminate.

NT4 does not support DDNS so somone is putting them there.

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Best regards,
Kevin D4 Dad Goodknecht Sr. [MVP]
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Jonathan de Boyne Pollard - 10 Aug 2004 17:44 GMT

KDGS> NT4 does not support DDNS [...]

But it could be slaving the relevant "zone" from a server that does.

His description is not self-consistent, of course. We have four assertions:

    C> We have a Nt 4 DNS server.
    C> It's configured as a primary with no secondary.
    C> the tow of us who has access to the DNS server did not put that in
because their was and obvious IP conflict with two of the added entries.
    C> sometimes we find host records from our internal network
in DNS [...] in the lowest folder that has our domain name.

At least one of these has to be a lie. I took #2 to be a lie. You're
taking #3 to be a lie. (-:

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Kevin D. Goodknecht Sr. [MVP] - 10 Aug 2004 20:07 GMT

> KDGS> NT4 does not support DDNS [...]
>
> But it could be slaving the relevant "zone" from a server
> that does.

This is true, but I took from face value that the NT4 was a primary because
he did not state it was a secondary from a Dynamic DNS server. Which would
explain this behavior, my guess is that if, it is a secondary of a DDNS
primary that some one has entered the parent Domain name in the connection
specific suffix field in TCP/IP properties. Which would explain the errant
record in the domain zone.

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Jonathan de Boyne Pollard - 10 Aug 2004 05:44 GMT

C> How does this get here

Dynamic DNS update, most probably.

C> and why?

Because an administrator of a machine told it to.

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